Undine Bay is a bay on the northern coast of Efate, Vanuatu. It lies between the main island and the smaller islands of Nguna Island and Pele Island, and east of Moso. Undine Harbour, at head of bay between Cape Paryadin and Chaplin Head, was documented by Weddell in 1823. The coastal area has been subject to the Marina Estates waterways residential development in recent years.
Coordinates: 17°30′54″S 168°21′27″E / 17.51500°S 168.35750°E